Arsenic in Marine Mammals, Seabirds, and Sea Turtles

Kunito, Takashi; Kubota, Reiji; Fujihara, Junko; Agusa, Tetsuro; Tanabe, Shinsuke

doi:10.1007/978-0-387-77030-7_2

Cited by 54 publications

(29 citation statements)

References 166 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This fish migrates from the sea to inland rivers to spawn [50]. The relatively high concentrations of As in this sea fish is not surprising since fish from the sea are known to contain higher concentration of As compared to freshwater fish [60]. Like with other fish from the sea, most of the As in Hilsha is likely to be organoarsenic compounds, such as arsenobetaine and arsenocholine.…”

Section: Discussionmentioning

confidence: 94%

Intake of arsenic and selenium in a Bangladeshi population investigated using inductively coupled plasma mass spectrometry

Al-Rmalli

Jenkins

Haris

2017

BSI

View full text Add to dashboard Cite

Abstract. Millions of people in Bangladesh are exposed to high concentration of the toxic element arsenic (As) through drinking water and consumption of foods. It has also been reported that Bangladeshis have a low intake of the essential element selenium (Se), which is known to be important as an antioxidant and has been suggested to counteract the toxicity of As. We report here on total intake of As and Se in a Bangladeshi population, based on inductively coupled plasma mass spectrometric (ICP-MS) analysis of a range of Bangladeshi foods. The total daily intake of As and Se from foods was estimated to be 74.2 and 87.7 µg/day, respectively. If As from water, used for drinking and cooking rice, is included the TDI increases to 385 µg of total As per day. An important finding of our study, contrary to suggestions given in other reports, is that the Bangladeshi diet does not appear to be deficient in Se and this may explain why the blood Se concentrations in Bangladeshis is similar to the USA population. This requires further investigation and detailed dietary and human biomonitoring studies on the Bangladeshi population should be conducted. Rice and fish were the main sources of dietary As and Se for Bangladeshis. Leafy vegetables could also be a significant contributor of high concentration of As in the Bangladeshi diet. The flesh and eggs of Hilsha (Tenualosa ilisha) species of fish were found to contain particularly high levels of total arsenic (range 0.77-6.15 mg/kg) although this is likely to be dominated by the non-toxic organoarsenic species.

show abstract

Section: Discussionmentioning

confidence: 94%

Intake of arsenic and selenium in a Bangladeshi population investigated using inductively coupled plasma mass spectrometry

Al-Rmalli

Jenkins

Haris

2017

BSI

View full text Add to dashboard Cite

show abstract

“…Fairbrother et al, 1994), chronic toxicity has not yet been adequately verified in experimental or wild animals (Huff et al, 2000). To establish whether high As concentrations found in the blood of St Kilda penguins are a potential concern, we propose that future studies measure the relative proportions of inorganic As, which is highly toxic (Eisler, 1988) and has been implicated as an endocrine disruptor (see review by Kunito et al, 2008).…”

Section: Non-essential Trace Elementsmentioning

confidence: 98%

The Little Penguin (Eudyptula minor) as an indicator of coastal trace metal pollution

Finger

Lavers

Dann

et al. 2015

Environmental Pollution

View full text Add to dashboard Cite

“…In birds, inorganic As is considered highly toxic in comparison with organic compounds of this element and may disrupt reproduction, act as an endocrine disruptor, trigger sub-lethal effects or even induce individuals' death (Eisler 1994;Kunito et al 2008). As concentrations in living organisms are generally low (\1 lg g -1 ww, approximately 5 lg g -1 dw; Braune and Noble 2009).…”

Section: Trace Element Distribution and Toxicity Significancementioning

confidence: 98%

Evidence of species-specific detoxification processes for trace elements in shorebirds

et al. 2012

View full text Add to dashboard Cite

This study investigated sub-lethal effects and detoxification processes activated in free-ranging Red Knots (RKs) (Calidris canutus) from the Pertuis Charentais on the Atlantic coast of France, and compared the results with previous data obtained on another shorebird species, the Black-tailed Godwit (Limosa limosa). The concentrations of 13 trace elements (Ag, As, Cd, Co, Cr, Cu, Fe, Hg, Mn, Ni, Pb, Se, Zn) were assessed in the liver, kidneys, muscle and feathers. Stable isotope analyses of carbon and nitrogen were carried out to determine whether differences in diet explained variations in elemental uptake. The mRNA expression of relevant genes (cytochrome c oxidase 1, acetyl-CoA carboxylase, Cu/Zn and Mn superoxide dismutase, catalase, metallothionein, malic enzyme), antioxidant enzyme activities (catalase, glutathione peroxidase (GPx), superoxide dismutase), and metallothionein (MT) levels were investigated to shed light on trace element detoxification and toxic effects. Although Red Knots were characterized by elevated As and Se concentrations which were potentially toxic, most elements were usually below toxicity threshold levels. The results strongly suggested a dietary specialization of Red Knots, with individuals feeding on higher trophic status prey experiencing higher As, Hg and Se burdens. Red Knots and Godwits also showed discrepancies in elemental accumulation and detoxification processes. Higher As and Se concentrations in Red Knots enhanced catalase gene expression and enzyme activity, while Godwits had higher Ag, Cu, Fe and Zn levels and showed higher MT production and GPx activity. The results strongly suggest that detoxification pathways are essentially trace element- and species-specific.

show abstract

Arsenic in Marine Mammals, Seabirds, and Sea Turtles

Cited by 54 publications

References 166 publications

Intake of arsenic and selenium in a Bangladeshi population investigated using inductively coupled plasma mass spectrometry

Intake of arsenic and selenium in a Bangladeshi population investigated using inductively coupled plasma mass spectrometry

The Little Penguin (Eudyptula minor) as an indicator of coastal trace metal pollution

Evidence of species-specific detoxification processes for trace elements in shorebirds

Contact Info

Product

Resources

About